Steel Tamper-Resistant One-Way Round Head Screws
1/4"-20 Thread Size, 1/2" Long
Thread | |
Size | 1/4"-20 |
Direction | Right Hand |
Spacing | Coarse |
Type | UNC |
Fit | Unified Standard Class 2A |
Tip Type | Flat |
Fastener Head Type | Rounded |
Head | |
Style | Round |
Profile | Standard |
Height | 0.175" |
Diameter | 0.472" |
Drive Style | One Way |
Length | 1/2" |
Threading | Fully Threaded |
Tensile Strength | 60,000 psi |
Specifications Met | ASME B18.6.3 |
Hardness | Rockwell B70 |
Material | Zinc-Plated Steel |
Performance | Tamper Resistant |
Screw Size Decimal Equivalent | 0.250" |
System of Measurement | Inch |
Country of Origin | United States |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731815.9000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Related Product |
Install these tamper-resistant screws with a common slotted driver. Once installed, the drive's sloped walls cause drivers to slip, making these screws difficult to remove without one-way screw removers. They're often found on public facilities, such as restroom partitions and other long-term installations, where tamper resistance is important and removal for maintenance is unlikely.
Length is measured from under the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
One-Way Screw Removers—Extract one-way screws. With two pins on the driver's end, they grip one-way screws to loosen them when slotted drivers just slip.
The information in this 3-D model is provided for reference only.